I did a back-of-the-envelope calculation and was surprised how much ice a square meter of solar power can make in a day. But to scale ice making machinery to pl

I did a back-of-the-envelope calculation and was surprised how much ice a square meter of solar power can make in a day. But to scale ice making machinery to planetary capacity you'll probably need to use all the metal we've mined, ever. With this kind of massive industrial effort, it's probably cheaper to build big towers and get rid of excess heat by pumping it up and radiating it into space off the night side of the planet. You don't need to make ice, you just need to reduce global temperatures. You could accomplish the same thing with a shield in space to reduce insolation.